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3 Sheets-Sheet 1.

(No Model.)

J. M. HETHERINGTON.

APPARATUS FOR CONTROLLING THE GRINDING 0F GARDING ENGINE FLATS.

atented Mar. 12, 1889.

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(No Model.) 3 Sheets-sheet 2. J. M. HETHERINGTON.

APPARATUS FOR CONTROLLING THE GRINDING 0F GARDING ENGINE FLATS.

atented Mar. 12; 1889.

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(No Model.) s Sheets-Sheet 3.

J. M. HETHERINGTON. v APPARATUS FOR CONTROLLING THE GRINDING DP GARDING ENGINE FLATS.

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ijNilTED States PATENT @rricne JOHN M. llETllE HNCJION, ()li MANCHESTER, (OUNTY ()i LAXUASTER, ENGLAND.

APPARATUS FOR CONTROLLING THE GRINDING OF CARDlNG-ENGINE FLATS.

SPECIFIGATEON forming part of Letters Patent No. 399,533, dated March 12, 1889.

Application filed August 10, 1838. Serial No. 282,449. (No modeld Patented in England November 2* 1837, No. 16,157,

lie it known that I, .Jonx Morn Iln'rninn- INGJON, a subject ot' the Queen ol Great lh-itain and Ireland, of the \'ulcan \Vorhs, Pollard titreet, liianehester, county of Lancaster, England, machiire-maker, have invented certain l'mprovementsin Apparatus for Controlling the Grinling ol' (Yardingdflng'ine Flats, (for which i have made application for a patent in (treat iiritain, No. 1 (3,157, dated November 24-, 1.887,) of which the following is a specil'i cation.

My invention relates to the grinding oil? the dais which are employed in carding-engines in the form of endless chains, is well undtnstood. On May 2s, 188s, l tiled in the Patent Ol'lice oi the United States an application for Letters Patent for an invention havingthe same oliject as my present invention. In my said :lformer invention I caused the working faces upon the llat bar ends to slide in contact with levers or parts during the grim'ling operation, and l llllptl'ictl controlled move ments to such levers or parts, the object be ing to obtain the required surface upon the card-taco, and at the same time to maintain an exact relation between such card-:l'acc and the said working-faces on the liat bar. in my present invention the rails or parts with which the said working-laces are in sliding contact during the grinding are fixed; but I impart movement to the axis of the g'rindirig-roller. The nmvement imparted to the roller, in ad dition to its revolving, motion, is arranged to he in directions to and 'li'ro, or l'orward and backward, and slightly inclined with respect to the line olf movement of the llat while being ground. The length of the linear movement of the roller may be halt the pitch of the chain oi. llats, or thereahout. The parts are so adjusted and regulated in their movements as that the roller moves at ahout the same speed as the Hats and cl'lects the grindinc when movingin the direction contrary to the movement oi the liat.

I will describe my invention more [fully with reference to the accompalrvi11g drawings.

Figure 1 represents al'ront elevation ol' my 5 improved apparatus, and also so much of a cardine-migine as is necessary to render clear the manner ol. a 'nplication ol' the apparatus. Fig. 2 is a side view of the parts appearing in Fig. l, the vertical line in liig. 2 being the dotted line .A ii .in Fig. 1. iiig. 23 shows the other or reverse side ol. the most important parts which appear in Fig. 1, drawn full size, with the [lat ends in section. Fig. l: illustrates how the to-and-lro movement may be imparted to the grinding-roller without the intervention of a sliding carriage.

In, Figs. 1 and Q, or is a portion of the lixed bend or curved side frame on one side of a cardirig-engine, t) is a part of the l'iexible bond, (1 c is a part of the chain of flats which slide upon the flexible bend, and (l is the grindingroller, all, these being; ordinary parts of a cardins -engine.

The gririding-roller. bracket (2 is altered in form to suit my purpose. The said bracket is formed with a projection, c, to increase the length of the top of the bracket, and this top is planed to receive a sliding: carriage, f, in which is formed a hearing for the shait of the grindiiig-roller. A corresponding'bracket is iixed at the other side of the engine and sustains a s1 idin carriage which corresponds to the carriage 7'. A bell-crank lever, g g, is fixed upon arock-shalt, 71, which extends across the engine from side to side and is mounted to turn in bearings. To carry this shaft, l have provided the ordinary adjustable blocks which carry the grinding-rollerbrackets with projecting arms, in which the bearings tor the shalit are :l'ornied.

the adjustable block c and carries one end of the shaft It. The outer rounded end of the arm g of the said lever occupies the space be tween the ends of two adjustable screws, 2' 1', with which the l'orhed end f of the carriage f is provided. The use oi? these screws is to establish a connection between the end of the lever and the carriage, so that when. the lever is vibrated upon its fulcrum the carriage will be moved to and l'ro, the screws serving as means for adjustment, so that there shall be t no backlash or shake in the connection. Itis obvious that any other suitable method of connection between the lever and the car riage may he adopted. 'lj 'pon the other end In Fig. 1, c is an arm which projects from of the shaft h is fixed a lever corresponding to the arm g and impart ng movement in the same manner to the other sliding carriage, in which the other end of the grinding-roller shaft is mounted. It will be seen that when the shaft 7b is rocked in its bearings the roller (Z will be moved to and fro in a straight line, both ends of the roller being moved at once and to the same extent, so that the axis of the roller is always at right angles with the flats which are passing below the roller. The arm g is connected with one end of a spring, g which tends to draw down the said arm, and thereby to impart the movement in the direction indicated by the arrow in Fig. 1 to the carriages f. This movement is limited by an adjustable screw, g which is secured on the end of the arm g and bears upon a stop, 0, which is cast upon the arm 0 This screw 9 by coming in contact with the stop 6, insures that the grinding-roller shall always move exactly to the same pointwhen moving in the direction indicated by the ar row. The movement in the contrary direction is derived from a cam-wheeLj, which is fixed upon the shaft j. This is the ordinary shaft upon which are fixed the two chainwheels which carry the chain of flats.

In my other invention, hereinbefore mentioned, I have a cam-wheel differing in the shape of its teeth or sections fixed upon the same shaft. The cam-wheel j acts upon a le ver, 7;, which is loosely mounted upon the rockshaft h. In a slot in the lever is fitted a stud, which can be adjusted in position by means of a screw, 7;, and which carries a bowl, 70 The said cam-wheel is provided with teeth all of the same form and corresponding in number to the number of flats which pass the wheel at each revolution, as in the case of my other invention hereinbefore referred to. In the example the cam-wheel has thirteen teeth. Each tooth is shaped to impart the movement in the direction contrary to the indication by the arrow to the roller (Z and to control the movement imparted by the spring 9 The first-named movement is imparted to the roller by the action of the curve 1 upon the bowl W, the controlling action which governs the speed of movement imparted by the spring being eifected by the curve 2. The lever 71'; is provided with a short arm, 76 ,111 which is an ad justable screw, 70, which bears against a projection on the lever-arm g, or vice versa, the latter arrangement, in which the said screw is carried by the projection and bears against the arm being that shown in Fig. 1. In the time required for the chain of flats to move a distance equal. to the distance from the center of one flat to the center of the next in the chain the roller (Z will make a double or toandfro movement, during which one of the curves 1 will move the bowl Z2 outward from the cam-wheel, thereby moving the lever k, and the arm 713 acting upon the lever will turn the shaft h in its bearings, and the two carriages f will be slid by the two levers g to the left in the drawingsthat is to say, in a direction contrary to the indication the return movement to the right being effected by the spring g as aforesaid. hen movir. g toward the left hand in Fig. 1, the roller is moving in a direction contrary to that of the flats, but when moving to the right the movement is in the same direction as that of the flats.

It will be observed that the line of traverse of .the roller is not parallel with the line of movement of the flats which are passing below the roller. In fact, it has such relation to the carding-surface on the card-flat as to compensate for the inclination of such surface with respect to the line of movement of the flat. To make this clear, the line of the cardingsurface of one of the flats is indicated by the dotted line in- Fig. *hen each flat is passing the roller and comes within the range of the action of the roller, the working-faces on the ends of the flats slide upon two rails, which I usually make to the same curve as the flexible bend Z), upon which the working-faces slide when the flats are at work, as seen at c in Fig. 1. One of these rails is seen at Z in Figs. 1 and 3. rail would, of course, be on the other side of the engine.

To keep the ends of the flat which is being ground in close contact with thetwo rails, I employ two levers, m, which are fixed upona rock-shaft, n, and upon the same shaft s fixed a loaded lever, on. The said loaded lever, by tending to turn the shaft n in its bearings, causes the levers m to press the flat upward against the two rails Z. The rails Z, the levers m, the shaft n, and the loaded lever m are also contained in my said former invention, for which I have applied for Letters Patent.

The action of the parts is as follows: In Figs. 1 and 3 the roller has just reached the limit of its traverse in the direction indicated by the arrow, the screw 9 is bearing upon the stop 6" in Fig. 1, and the bowl k in the same figure is near the bottom of the space between two teeth in the cam 7'. At the same time one of the flats is just meeting the grind ing-roller, as seen in Fig. 3, the said flat being marked 0 The movement of the cam j will now push. outward the end of the leverarm 7;, whereby the carriages f will be caused to slide in a direction. contrary to the indication by the arrow. The flat 0 will at the same time be moving in the indicated directionthat is to say,in a direction contrary to the movement of the carriages f. During these movements of the grinding-roller and the flat in opposite directions the surface of the flat will be ground by the action of the The other said roller, which is revolved as is usual. It

of movement. \Vhen the point of the tooth which has been acting upon the bowl is? commences to pass the said bowl, the direction of movement of the carriages f will be reversed, and the grinding-roller will then move in the same direction as the flat, and will at the same time be rising slightly away from the flat, so that by the time the roller has moved back into the position indicated in Fig. 3 the roller will be exactly in position to commence upon the higher edge of the next flat, 0 in the chain. By repetitions of these movements the whole of the flats in the chain are successively ground.

It is not absolutely necessary that the lat eral movement of the grinding-roller shall be on a straight line, as it might be on a curve which would approximate to a straight line.

Fig. 1- shows the roller carried by leverarms gf, which would be acted upon by the lever l;- lrf and the cam j, as in the case of the levers g llaving fully described my invention, I state that what I claim as my invention is- .l. The carriage f, carrying the grindingroller (1, the shaft 7L, and arms g, for sliding the said carriages to and fro, the lever 7a k for operating upon the shaft h through the arm g, and the cam j, for operating upon the lever L 7r, substantially as and for the purpose set forth.

2. The roller (Z, mounted 011 the sliding carriage f, the slide at c on the bracket 6, having the described inclination with respect to the rail Z" upon each side of the carding-engine,1n combination wit-h means, substantially as described, for traversing the carriages f to and fro during the grinding action of the roller (l upon each fiat in the traveling chain 0, substantially as set forth.

3. The cam-wheelj, the lever it? it", the shaft 71, and the lever-arms 5 one formed with an arm, g, attached to the spring in combination with the sliding carriages f f, carrying the guiding-roller (I, substantially as set forth.

l. The grinding-roller (Z and movable bearings therefor, in combination with the shaft 72 arms mounted 011 said shaft and operating said bearings, the lever 7t on said shaft and adapted to actuate said arms, and the cant engaging and adapted to oscillate said lever, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN M. HE'IIIERTNG'lON.

\Vitn esses:

EDW'ARD K. D U'rro'N, FREDK. DILLON. 

